package com.changgou.goods.service.impl;

import com.alibaba.fastjson.JSON;
import com.changgou.goods.dao.*;
import com.changgou.goods.pojo.*;
import com.changgou.goods.service.SpuService;
import com.changgou.util.IdWorker;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;
import tk.mybatis.mapper.entity.Example;

import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Set;

@Service
public class SpuServiceImpl implements SpuService {

    @Autowired
    private SpuMapper spuMapper;
    @Autowired
    private IdWorker idWorker;
    @Autowired
    private SkuMapper skuMapper;
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private BrandMapper brandMapper;
    @Autowired
    private CategoryBrandMapper categoryBrandMapper;
    /**
     * 查询全部列表
     * @return
     */
    @Override
    public List<Spu> findAll() {
        return spuMapper.selectAll();
    }

    /**
     * 根据ID查询
     * @param id
     * @return
     */
    @Override
    public Goods findById(String id){
        Goods goods = new Goods();
        //1.设置spu属性。
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //2.查询sku属性。根据spuId来查询
        Example example = new Example(Sku.class);
        Example.Criteria criteria = example.createCriteria();
        //criteria后面跟条件 类似where语句后面的
        criteria.andEqualTo("spuId",spu.getId());
        List<Sku> skuList = skuMapper.selectByExample(example);
        goods.setSpu(spu);
        goods.setSkuList(skuList);
        return  goods;
    }

    @Override
    public Spu SpuFindById(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        return spu;
    }


    /**
     * 增加
     * @param goods
     */
    @Transactional //开启事务注解
    @Override
    public void add(Goods goods){
        //1. 存spu
        Spu spu = goods.getSpu();
        spu.setId(idWorker.nextId()+"");
        spu.setIsMarketable("0");
        spu.setIsDelete("0");
        spu.setStatus("0");
        spuMapper.insert(spu);

        //2. 存skuList
        saveSkuList(goods);
    }

    private void saveSkuList(Goods goods) {
        Spu spu = goods.getSpu();
        String spuName = spu.getName();

        Category category = categoryMapper.selectByPrimaryKey(spu.getCategory3Id());
        Integer categoryId = category.getId();
        String categoryName = category.getName();

        Brand brand = brandMapper.selectByPrimaryKey(spu.getBrandId());
        String brandName = brand.getName();
        //添加分类与品牌之间的关联
        CategoryBrand categoryBrand = new CategoryBrand();
        categoryBrand.setCategoryId(spu.getCategory3Id());
        categoryBrand.setBrandId(spu.getBrandId());
        int count = categoryBrandMapper.selectCount(categoryBrand);
        if (count == 0){
            categoryBrandMapper.insert(categoryBrand);
        }

        List<Sku> skuList = goods.getSkuList();
        if (skuList!=null){
            for (Sku sku : skuList) {
             //查漏补缺
                //1 设置id
                sku.setId(idWorker.nextId()+"");
                //2 设置商品名sku name =spuName + " " +spec
                String spec = sku.getSpec();
                Map map = JSON.parseObject(spec, Map.class);
                String skuName="";
                if (map !=null && map.size()>0){
                    for (Object o : map.keySet()) {
                        skuName+=" "+map.get(o);
                    }
                }
                sku.setName(spuName);
                //3 创建时间 当前
                sku.setCreateTime(new Date());
                //4 修改时间
                sku.setUpdateTime(new Date());
                //5 spuid
                sku.setSpuId(spu.getId());
                //6 category id
                sku.setCategoryId(categoryId);
                //7 category name
                sku.setCategoryName(categoryName);
                //8 brand name
                sku.setBrandName(brandName);
                //把sku的数据存入数据库
                skuMapper.insertSelective(sku);
            }
        }
    }


    /**
     * 修改
     * @param goods
     */
    @Override
    public void update(Goods goods){
        //1. 先修改spu的内容
        Spu spu = goods.getSpu();
        spuMapper.updateByPrimaryKeySelective(spu);
        //2. 修改sku的内容 先删除直接新增一个sku
        Example example = new Example(Sku.class);
        Example.Criteria criteria = example.createCriteria();
        criteria.andEqualTo("spuId",spu.getId());
        skuMapper.deleteByExample(example);

        this.saveSkuList(goods);
    }

    /**
     * 删除
     * @param id
     */
    @Override
    public void delete(String id){
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //1. 判断是否上架
        if (!spu.getIsMarketable().equals("0")){
            throw new RuntimeException("上架中的商品不允许删除");
        }
        //2. 设置删除状态码
        spu.setIsDelete("1");
        spuMapper.updateByPrimaryKeySelective(spu);
    }


    /**
     * 条件查询
     * @param searchMap
     * @return
     */
    @Override
    public List<Spu> findList(Map<String, Object> searchMap){
        Example example = createExample(searchMap);
        return spuMapper.selectByExample(example);
    }

    /**
     * 分页查询
     * @param page
     * @param size
     * @return
     */
    @Override
    public Page<Spu> findPage(int page, int size){
        PageHelper.startPage(page,size);
        return (Page<Spu>)spuMapper.selectAll();
    }

    /**
     * 条件+分页查询
     * @param searchMap 查询条件
     * @param page 页码
     * @param size 页大小
     * @return 分页结果
     */
    @Override
    public Page<Spu> findPage(Map<String,Object> searchMap, int page, int size){
        PageHelper.startPage(page,size);
        Example example = createExample(searchMap);
        return (Page<Spu>)spuMapper.selectByExample(example);
    }

    /**
     * 商品审核
     * @param id
     */
    @Override
    @Transactional
    public void audit(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //1.判断该商品是否存在
        if (spu == null){
            throw new RuntimeException("该商品不存在！");
        }
        //2.判断该商品是否属于删除状态
        String isDelete = spu.getIsDelete();
        if (isDelete.equals("1")){
            throw new RuntimeException("当前商品处于删除状态");
        }
        //3. 修改审核状态为1 并且上架 设置状态为1
        spu.setStatus("1");
        spu.setIsMarketable("1");

        spuMapper.updateByPrimaryKeySelective(spu);
    }

    /**
     * 下架商品
     * @param id
     */
    @Override
    public void pull(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //1.判断该商品是否存在
        if (spu==null){
            throw new RuntimeException("该商品不存在！");
        }
        //2.判断该商品是否属于删除状态
        if (spu.getIsDelete().equals("1")){
            throw new RuntimeException("当前商品处于删除状态");
        }
        //3. 下架商品设置状态为0
        spu.setIsMarketable("0");

        spuMapper.updateByPrimaryKeySelective(spu);
    }

    /**
     * 上架商品
     * @param id
     */
    @Override
    public void put(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //1.判断该商品是否存在
        if (spu==null){
            throw new RuntimeException("该商品不存在！");
        }
        //2.判断该商品是否属于审核过的商品
        if (!spu.getStatus().equals("1")){
            throw new RuntimeException("未通过审核的商品不能上架！");
        }
        //3. 下架商品设置状态为1
        spu.setIsMarketable("1");
        spuMapper.updateByPrimaryKeySelective(spu);
    }

    /**
     * 还原逻辑删除的商品
     * @param id
     */
    @Override
    public void restore(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //1.判断该商品状态码是否为1
        if (!spu.getIsDelete().equals("1")){
            throw new RuntimeException("该商品未删除");
        }
        spu.setIsDelete("0");
        spuMapper.updateByPrimaryKeySelective(spu);
    }

    @Override
    public void realDelete(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //1. 判断商品是否已经逻辑删除
        if (!spu.getIsDelete().equals("1")){
            throw new RuntimeException("此商品未删除");
        }

        Example example = new Example(Sku.class);
        Example.Criteria criteria = example.createCriteria();
        criteria.andEqualTo("spuId",spu.getId());
        skuMapper.deleteByExample(example);
        spuMapper.deleteByPrimaryKey(id);
    }

    /**
     * 构建查询对象
     * @param searchMap
     * @return
     */
    private Example createExample(Map<String, Object> searchMap){
        Example example=new Example(Spu.class);
        Example.Criteria criteria = example.createCriteria();
        if(searchMap!=null){
            // 主键
            if(searchMap.get("id")!=null && !"".equals(searchMap.get("id"))){
                criteria.andEqualTo("id",searchMap.get("id"));
           	}
            // 货号
            if(searchMap.get("sn")!=null && !"".equals(searchMap.get("sn"))){
                criteria.andEqualTo("sn",searchMap.get("sn"));
           	}
            // SPU名
            if(searchMap.get("name")!=null && !"".equals(searchMap.get("name"))){
                criteria.andLike("name","%"+searchMap.get("name")+"%");
           	}
            // 副标题
            if(searchMap.get("caption")!=null && !"".equals(searchMap.get("caption"))){
                criteria.andLike("caption","%"+searchMap.get("caption")+"%");
           	}
            // 图片
            if(searchMap.get("image")!=null && !"".equals(searchMap.get("image"))){
                criteria.andLike("image","%"+searchMap.get("image")+"%");
           	}
            // 图片列表
            if(searchMap.get("images")!=null && !"".equals(searchMap.get("images"))){
                criteria.andLike("images","%"+searchMap.get("images")+"%");
           	}
            // 售后服务
            if(searchMap.get("saleService")!=null && !"".equals(searchMap.get("saleService"))){
                criteria.andLike("saleService","%"+searchMap.get("saleService")+"%");
           	}
            // 介绍
            if(searchMap.get("introduction")!=null && !"".equals(searchMap.get("introduction"))){
                criteria.andLike("introduction","%"+searchMap.get("introduction")+"%");
           	}
            // 规格列表
            if(searchMap.get("specItems")!=null && !"".equals(searchMap.get("specItems"))){
                criteria.andLike("specItems","%"+searchMap.get("specItems")+"%");
           	}
            // 参数列表
            if(searchMap.get("paraItems")!=null && !"".equals(searchMap.get("paraItems"))){
                criteria.andLike("paraItems","%"+searchMap.get("paraItems")+"%");
           	}
            // 是否上架
            if(searchMap.get("isMarketable")!=null && !"".equals(searchMap.get("isMarketable"))){
                criteria.andEqualTo("isMarketable",searchMap.get("isMarketable"));
           	}
            // 是否启用规格
            if(searchMap.get("isEnableSpec")!=null && !"".equals(searchMap.get("isEnableSpec"))){
                criteria.andEqualTo("isEnableSpec", searchMap.get("isEnableSpec"));
           	}
            // 是否删除
            if(searchMap.get("isDelete")!=null && !"".equals(searchMap.get("isDelete"))){
                criteria.andEqualTo("isDelete",searchMap.get("isDelete"));
           	}
            // 审核状态
            if(searchMap.get("status")!=null && !"".equals(searchMap.get("status"))){
                criteria.andEqualTo("status",searchMap.get("status"));
           	}

            // 品牌ID
            if(searchMap.get("brandId")!=null ){
                criteria.andEqualTo("brandId",searchMap.get("brandId"));
            }
            // 一级分类
            if(searchMap.get("category1Id")!=null ){
                criteria.andEqualTo("category1Id",searchMap.get("category1Id"));
            }
            // 二级分类
            if(searchMap.get("category2Id")!=null ){
                criteria.andEqualTo("category2Id",searchMap.get("category2Id"));
            }
            // 三级分类
            if(searchMap.get("category3Id")!=null ){
                criteria.andEqualTo("category3Id",searchMap.get("category3Id"));
            }
            // 模板ID
            if(searchMap.get("templateId")!=null ){
                criteria.andEqualTo("templateId",searchMap.get("templateId"));
            }
            // 运费模板id
            if(searchMap.get("freightId")!=null ){
                criteria.andEqualTo("freightId",searchMap.get("freightId"));
            }
            // 销量
            if(searchMap.get("saleNum")!=null ){
                criteria.andEqualTo("saleNum",searchMap.get("saleNum"));
            }
            // 评论数
            if(searchMap.get("commentNum")!=null ){
                criteria.andEqualTo("commentNum",searchMap.get("commentNum"));
            }

        }
        return example;
    }

}
